Method for producing regular electronickel or S nickel rounds fr

Details Method for producing regular electronickel or S nickel rounds fr Method for producing regular electronickel or S nickel rounds fr

1976-06-15

1977-08-09

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

204281, C25D 110, C25D 120

Patent

active

040409155

ABSTRACT:
A permanent electrodeposition mandrel for use in making buttons or rounds of electrodeposited metal comprises a masked stainless steel plate having exposed islands of bare metal. Each of the islands has at least a recess in the bare metal surface at or near the perimeter of the island, the depth of the recess being about 0.12 mm to about 1.3 mm with the major dimension of the island being about 5 to about 50 times the depth of the recess and in the range of about 7 to about 50 mm. The mandrel is used in electrodeposition processes wherein thick deposits of high internal tensile stress metal are produced.

REFERENCES:
patent: 1163337 (1915-12-01), Guggenheim
patent: 2530842 (1950-11-01), Ruggieri
patent: 2773816 (1956-12-01), Wesley et al.
patent: 3577330 (1971-05-01), Knapp et al.
patent: 3668081 (1972-06-01), Borner
Ency. Brit., vol. 17, p. 906, 1971 Ed.

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